Japan Gold Corp. (TSX-V: JG) (OTCQB: JGLDF) is pleased to report high-grade gold-silver intercepts from its first drill holes at the Ryuo Prospect, within the Ikutahara Project, Figure 1. The Ikutahara Project is 100% held by Japan Gold and is not included in the Barrick Alliance.
The Ryuo Prospect hosts five areas of workings along a 1 km open ended trend of alteration and mineralization that were developed prior to the government-imposed closure in 1943. Three initial scout drill holes totaling 828.3 m were completed between May and July 2021. Figure 2 shows the geology of the Ryuo Prospect area, the location of the completed drill holes and the pads permitted for future drilling. Table 1 summarizes the drilling results.
Drill hole IKDD21-001 targeted down-dip extensions of high-grade gold-silver mineralization historically mined at the Jinja Vein. A broad mineralized interval was encountered (reported as downhole intervals) with the following results:
4.9 m @ 12.1 g/t Au & 33.0 g/t Ag from 60.6 m
(incl. 0.9 m @ 18.4 g/t Au & 115.8 g/t Ag from 60.6 m)
(and 1.95 m @ 20.5 g/t Au & 21.0 g/t Ag from 63.55 m)
(incl. 0.55 m @ 59.4 g/t Au & 49.5 g/t Ag from 63.9 m)
(incl. 0.25 m @ 125.0 g/t Au & 97.0 g/t Ag from 64.2 m)
The intersection in IKDD21-001 shows that high-grade gold and silver mineralization remains open to depth below the Jinja Vein workings and, having a true width of 4.74 m, is significantly wider than average vein widths reported historically in the underground workings (See Figures 3 and 4).
The intercepted vein zone exhibits multiple phases of hydrothermal brecciation, quartz and quartz-sulphide veining, including ginguro banding. The quartz vein textures are very fine-grained or chalcedonic, indicating the quartz veining is still high in the hydrothermal system and that mineralization should persist to depth.
Drill hole IKDD21-003, located 550 m southwest of IKDD21-001, on a separate parallel structure, targeted mineralization below the Ryuei historical workings. Four separate zones of hydrothermal breccia up to 20 m in down-hole width were intersected down the length of the 350 m drill hole (Figure 5). Zones of fine-grained or chalcedonic quartz and quartz-sulphide vein-fill within the breccias included the following mineralized intercepts (reported as downhole intervals):
2.12 m @ 6.3 g/t Au & 12.6 g/t Ag from 81.2 m
(incl. 1.32 m @ 8.9 g/t Au & 17.6 g/t Ag from 81.55 m)
(incl. 0.3 m @ 14.8 g/t Au & 27.8 g/t Ag from 81.95 m)
0.5 m @ 3.1 g/t Au & 7.2 g/t Ag from 119.7 m
These multiple phases of hydrothermal brecciation, quartz and quartz-sulphide veining in IKDD21-003 may represent the upper, flared portions of an epithermal vein system which could possibly coalesce at depth (Figure 5). Elevated path-finder element geochemistry including antimony, arsenic, and mercury associated with the hydrothermal breccias supports this model.
Drill hole IKDD21-002 targeted the northeast strike extension of the Shouei Vein and a coincident CSAMT resistivity geophysical anomaly, Figure 2. The drill hole failed to intersect a significant vein zone apart from a narrow quartz-stockwork / faulted zone which is interpreted as the northeast extension of the Shouei structure. Workings at the Shouei Vein were as extensive as those at the Jinja Vein, but no detailed underground sampling data exists. Historical reports however indicate two parallel veins were exploited at Shouei with shoots that carried gold and silver grades comparable to those at the Jinja Vein1,2. Based on the drill result at the Jinja Vein, 300 m to the northwest, further drilling will be required to test down-dip and southwest strike extensions of the Shouei Vein which remain open.
“The initial drill holes at Ryuo have confirmed wide, high-grade vein mineralization is continuous below the historical workings closed in 1943. The Ryuo prospect has never been drilled and these initial results provide strong encouragement to continue drilling at Ryuo, and the other similarly under-explored Ikutahara prospects.” Commented, Japan Gold’s Vice President of Exploration, Andrew Rowe.
Drilling recommenced on the 6th of September to test the lateral strike extensions of the intercept in IKDD21-001 at the Jinja Vein. A second drill rig is targeting a vertical CSAMT resistivity anomaly that lies below the Taisei workings. Up to five additional drill holes are planned to be completed by the end of November at the Ryuo Prospect.
Table 1: Significant Mineralized Intercepts
|Drill Hole Number||From (m)||To (m)||Interval (m)||True Width (m)||Au(g/t)||Ag(g/t)|
|IKDD21-002||No Significant Intersections|
The Ryuo Prospect
At the Ryuo Prospect, five areas of workings were developed along a 1 km long, open ended trend of alteration and mineralization prior to the government-imposed closure in 1943. Underground sampling carried out in the 1950’s in the Jinja Vein workings revealed high-grade gold-silver mineralization including ‘level 4’ of the workings, which was sampled along a 72 m strike length giving an average grade of 40.8 g/t Au and 193 g/t Ag, average vein width approximately 0.5 m. Figure 3 illustrates a long-section of the Jinja vein workings with the underground sampling reported by the Metal Mining Agency of Japan (MMAJ)3 and the IKDD21-001 vein pierce-point. High-grade gold/silver quartz veins were mapped on all four of the lower levels of the Jinja vein system. Chip-channel samples were collected across the veins at intervals spaced between 0.3 m and 4.7 m along strike.
Refer also to the Company’s news release dated May 26 ,2021 and Feb. 9, 2017, for more information on the Ryuo Prospect.
Table 2: Drill hole data
|Drill Hole No.||Location||Easting||Northing||RL||Azimuth||Dip||Length|
1 Gold Mines of Japan, 1989. The Mining & Materials Processing Institute of Japan.
2 Bamba T. & Saito M., 1956. Geology and Gold-silver Deposits of the Kitano-o and Several Other Mines, Ikutahara Gold Mining District, Kitami Province, Hokkaido. Geological Survey Institute Monthly Report Volume 10. No. 7.
3 Metal Mining Agency of Japan, March 1990, Geological Survey Report for Fiscal Year 1989, Northern Hokkaido Area B-Metalliferous Deposits Overview.
The technical information in this news release has been reviewed and approved by Japan Gold’s Vice President of Exploration and Country Manager, Andrew Rowe, BAppSc, FAusIMM, FSEG, who is a Qualified Person as defined by National Instrument 43-101.
Note: The Company’s compilation of underground sampling data at Ryuo has been based on data published by the MMAJ and the Company has not resampled the underground workings or re-assayed samples. The MMAJ report does not refer to QA/QC protocols followed historically.
About Japan Gold Corp.
Japan Gold Corp. is a Canadian mineral exploration company focused solely on gold exploration across the three largest islands of Japan: Hokkaido, Honshu and Kyushu. The Company has a country-wide alliance with Barrick Gold Corporation to jointly explore, develop and mine certain gold mineral properties and mining projects. The Company holds a portfolio of 31 gold projects which cover areas with known gold occurrences, a history of mining and are prospective for high-grade epithermal gold mineralization. Japan Gold’s leadership team represent decades of resource industry and business experience, and the Company has recruited geologists, drillers and technical advisors with experience exploring and operating in Japan.
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